摘要
用上下解方法得到了 Rn 中光滑有界区域上f ( x , u , Du) 在u = 0 处具奇性的椭圆方程 Δu+ f ( x , u , Du) = 0 零边值问题正解的存在性并由此直接获得了“超布朗运动” 中所需的椭圆方程奇异边值问题正确的存在性.
In this paper,by the method of subsolutions and supersolutions,for smooth boundary domain Ω of R\+n ,the existence of positive solutions for singular nonlinear elliptic boundary value problem Δu+f(x,u,Du)=0,u|\-\{Ω\}=0 ,has been obtained.By the transformation u=v\+\{-p\}(p>2/(q-1)) ,the existence of positive solutions for Δv=Cv\+q(C>0,q>1),v|\-\{Ω\}=+∞ ,has also been obtained.
出处
《重庆交通学院学报》
1999年第3期129-134,共6页
Journal of Chongqing Jiaotong University
关键词
椭圆方程
奇异非线性
奇异边值问题
正解
elliptic equation
singular nonlinearity
singular boundary value
existence of positive solution